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Checking whether a collection contains a specific item is a routine task in .NET, and with Contains() available on many collection types, it’s easy to assume they all perform similarly. In reality, the underlying data structure and search strategy make a dramatic difference, turning what looks like a simple lookup into …
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The excerpt emphasizes the importance of clarity and maintainability in designing APIs and methods in Microsoft .NET. It explains that while out parameters can be useful, they often lead to reduced readability and increased complexity. Their use should be limited to specific scenarios, particularly the Try pattern, for …
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Learn how to apply CQRS with feature slices in C#. See how commands and queries fit into a feature-sliced .NET project without requiring MediatR or a complex framework. Link to article: https://www.devleader.ca/2026/04/25/cqrs-with-feature-slices-in-c-commands-and-queries-per-feature
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Master state pattern best practices in C# including transition management, guard conditions, state hierarchies, and organized state machine architectures. Link to article: https://www.devleader.ca/2026/04/25/state-pattern-best-practices-in-c-code-organization-and-maintainability
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The test pyramid made sense when integration tests meant a shared database server and a 20-minute build. It doesn't match how I build .NET systems in 2026. Most of my real bugs live at the seams, and unit tests don't catch any of them. Here's the testing shape I actually ship with. Link to article: …
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Master C# Regex with this complete guide covering pattern syntax, RegexOptions, GeneratedRegex, performance, and real .NET code examples. Link to article: https://www.devleader.ca/2026/04/24/c-regex-complete-guide-to-regular-expressions-in-net
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We're excited to announce that the Azure MCP Server is now available as an MCP Bundle (.mcpb). This means you can install the Azure MCP Server into Claude Desktop and other MCP-compatible clients Link to article: https://devblogs.microsoft.com/azure-sdk/azure-mcp-server-mcpb-support
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In this post, we show how connecting the Visier Workforce AI platform with Amazon Quick through Model Context Protocol (MCP) gives every knowledge worker a unified agentic workspace to ask questions in. Visier helps ground the workspace in live workforce data and the organizational context that surrounds it while …
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When people talk about building AI agents, they usually focus on models, tools, and prompts. In practice, one of the most important architectural decisions is much simpler: where does the conversation history live? Imagine a user asks your agent a complex question, clicks “try again,” explores tw Link to article: …
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One of the handy helpers in the Windows Implementation Library (WIL) is wil::scope_exit. We've used it to Link to article: https://devblogs.microsoft.com/oldnewthing/20260424-00/?p=112266
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Build a complete command pattern real-world example in C# with a text editor featuring undo/redo, command history, and macro recording. Link to article: https://www.devleader.ca/2026/04/24/command-pattern-realworld-example-in-c-complete-implementation
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On March 31, 2026, malicious versions of the widely used JavaScript HTTP client library Axios were briefly published to the npm registry as part of a supply chain attack. The affected versions — 1.14.1 and 0.30.4 — included a hidden malicious dependency Link to article: …
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AI is accelerating coding, but without the right checks, it can also introduce risk, inconsistency, and hidden issues into your codebase. Businesses are offering “total automation” and “AI-driven checks” while consumers lose control of code quality and security. In this livestream, we’ll show how to take control of …
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Compare feature slicing vs clean architecture in C#. Learn the tradeoffs, when each approach fits best, and how to combine them in .NET projects. Link to article: https://www.devleader.ca/2026/04/23/feature-slicing-vs-clean-architecture-in-c-which-one-should-you-use
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We're excited to announce that the Azure MCP Server is now available as an MCP Bundle (.mcpb). This means you can install the Azure MCP Server into Claude Desktop and other MCP-compatible clients Link to article: https://devblogs.microsoft.com/azure-sdk/azure-mcp-server-mcpb-support
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Today is launch day for Ubuntu 26.04 (Resolute Raccoon). Congratulations on the release to our friends at Canonical. Each new Ubuntu LTS comes with the latest .NET LTS so that you ca Link to article: https://devblogs.microsoft.com/dotnet/whats-new-for-dotnet-in-ubuntu-2604
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Amazon Quick changes how you work. You can set it up in minutes and by the end of the day, you will wonder how you ever worked without it. Quick connects with your applications, tools, and data, creating a personal knowledge graph that learns your priorities, preferences, and network. Link to article: …
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Want to build AI agents with JavaScript that go beyond basic chat completions? Agents that reason, call tools, and pull from knowledge bases on their own? We put together a free, open source course to help you get there. LangChain.js for Beginners is 8 cha Link to article: …
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We’re excited to announce the General Availability (GA) of Single Sign-On (SSO) from Native Apps to Embedded Web Views for Microsoft Entra External ID (EEID) Native Authentication. This release marks a major milestone in delivering end-to-end seamless authentication experiences for modern CIAM applications bridging the …
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In this post, we'll explore how multimodal BioFMs work, showcase real-world applications in drug discovery and clinical development, and contextualize how AWS enables organizations to build and deploy multimodal BioFMs. Link to article: …
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